Perhaps you should try some spelling variations:
thieu manh » hieu manh, tien manh, trieu minh
hoc thieu » toc thieu, hoc hien
tranh van » tran van, trinh van, thanh van
hang cong » dang cong, hang nong, bang cong
hach toan » thanh toan, manh toan
van hang » van khang, van hoang, van thang
tac toan » tap toan, tam toan, tich toan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu manh - canh tranh van hang cong ((tac toan) OR (hach toan)) ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu manh - canh tranh van hang cong ((tac toan) OR (hach toan)) ban".
• Adding a wildcard symbol may retrieve word variants: hoc thieu manh - canh tranh van hang cong ((tac toan) OR (hach toan)) ban*.